What recent Da Vinci Code-like movie revolved around a quest for things from Charlemagne's time?

I'm in China right now. For two weeks they were showing a movie that had the English title "The Charlemagne Code." It was definitely an Anglo/American/European movie but IMDB does not list anything with this title. What movie was it? I'm uming it is a 2010 release as it was playing in the same cinema as The Expendables.